JPH10269759A - Shaft-mounting structure for bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily mount a shaft to a bearing part. SOLUTION: The first rib of a pair of left and right first ribs for guiding a shaft 4 in the width direction of a bearing part 5 is provided around a shaft hole 5a for fitting the shaft 4 of a pair of left and right bearing parts 4 being provided on the lower surface of a CD lid 2, a second rib 12 for guiding the shaft 4 in axial direction is provided at the lower part of the shaft hole 5a, and a pair of left and right shafts 4 that are mounted to a flexible arm 15 are guided along a first rib and a second rib 12, are guided to the shaft hole 5a, and are engaged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft mounting structure in which a shaft provided on an apparatus main body of a CD device is rotatably fitted to a bearing provided on a CD cover. In particular, the present invention relates to a structure for attaching a shaft to a bearing in which a shaft can be easily attached to a bearing portion.

[0002]

2. Description of the Related Art For example, as shown in FIG. 7, a CD cover 2 is attached to an upper portion of a device main body 1 so as to be rotatable about a shaft 3 as shown in FIG. FIG. 8 shows a configuration of an example of a conventional shaft portion 3 and a bearing portion 5. Referring to FIG.
A pair of left and right shafts 4 are provided coaxially on the upper inner surface in parallel with the upper surface. On both sides of one end of the CD cover 2, a pair of left and right bearings 5 protruding downward are provided at positions facing the shaft 4, respectively. The fitted shaft hole 5a is formed coaxially. When attaching the CD cover 2 to the apparatus main body 1, the shaft hole 5 of the bearing portion 5 is visually aligned with the shaft 4, and the bearing portion 5 is bent outward to fit the shaft 4 into the shaft hole 5a. I do.

[0003]

However, according to the above configuration, the operator must visually align the shaft hole 5a of the bearing portion 5 with the shaft 4, which requires a long working time. In order to reduce the work time, the operator needs to be used. Further, when the CD cover 2 is removed from the apparatus main body 1, the rigid bearing portion 5 must be bent and removed with a large force using a flathead screwdriver or the like, and the workability is poor.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a shaft mounting structure that can easily attach and detach a shaft to and from a bearing.

[0005]

In order to achieve the above object, a shaft mounting structure for a bearing according to the present invention comprises a shaft portion formed of a flexible member capable of being displaced in the axial direction, and a shaft mounted on the bearing portion. A guide member for guiding the shaft into a shaft hole formed in the bearing portion.

In the shaft mounting structure for a bearing according to the present invention,
When the shaft is mounted on the bearing, the shaft is moved in the direction of the shaft hole along the guide member, so that the shaft is guided by the guide member and fits into the shaft hole formed in the bearing portion.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a shaft mounting structure for a bearing according to the present invention will be described below with reference to the drawings.

FIG. 1 is a longitudinal sectional view of a shaft portion and a bearing portion. FIG. 2 is a view of the shaft portion 3 and the bearing portion 5 shown in FIG. FIG. 3 is a vertical sectional view taken along line BB of FIG. 2. In these figures, portions corresponding to those of the conventional example shown in FIG. 8 are denoted by the same reference numerals, and description thereof will be omitted as appropriate. The feature of the present embodiment is that the shaft portion 13 is formed of a flexible member such as plastic, and ribs 11 and 12 are provided around the shaft hole 5a of the bearing portion 5 as guide members. Is almost the same as the conventional example shown in FIG.

In FIGS. 1 to 3, a pair of left and right bearings 5 projecting downward are integrally formed on the left and right sides of the base end of the plastic CD cover 2. The bearing portion 5 is provided with a cylindrical shaft hole 5a on the axis parallel to the upper surface of the CD cover 2 so as to face each other and coaxially. A first rib 11 and a second rib 12 are formed integrally on the opposing surfaces of the bearing portion 5 so as to protrude inward.

The first rib 11 comprises a pair of ribs arranged symmetrically on both sides of the shaft hole 5a, and the upper end is in contact with both outer peripheral sides of the shaft hole 5a. The lower part of the first rib 11 is inclined in a direction in which the interval is widened, and the first rib 11
Has a size protruding slightly inward from the cylindrical end face of the shaft hole 5a.

The second rib 12 is composed of three ribs arranged in parallel downward from the lower surface of the shaft hole 5a, and the upper end is in contact with the outer lower surface of the shaft hole 5a. The axial width of the upper end of the second rib 11 is equal to the height of the shaft hole 5a, and is connected to the end face of the shaft hole 5a. The lower part of the second rib 12 is an inclined surface inclined outward.

The shaft portion 13 has a pair of right and left arms 15 integrally formed so as to protrude at right angles to the upper surface of a plastic cabinet 14 of the apparatus main body 1.
A shaft 4 is integrally formed at an upper end of each of the shafts 5 so as to protrude outward on an axis parallel to the upper surface of the cabinet 14.
The arm 15 has flexibility, and a pair of left and right shafts 4 can be fitted into a pair of left and right shaft holes 5a of the bearing portion 5 in a state where no external force is applied. An inclined surface 4a is formed on the upper surface of the outer periphery of the tip of the shaft 4, as shown in FIG.

Next, the operation of the structure for mounting a shaft to a bearing according to the present embodiment will be described with reference to FIGS. CD cover 2
When the CD cover 2 is mounted on the shaft 4 provided in the cabinet 14, the shaft 4 is located between the first ribs 11 and the CD cover 2
Is pushed down to the cabinet 14 side. At this time, if the outer diameter of the shaft 4 is within the range of the dimension C of the lower surface of the first rib 11 widened as shown in FIG. 4, the lid 2 is displaced or inclined to some extent in the front-rear direction indicated by the arrow DE. Even if it does, the shaft 4 can be guided by the first rib 11 and guided by the shaft hole 5a of the bearing portion 5 to be fitted.

An inclined surface 4 formed on the outer periphery of the tip of the shaft 4
If a is within the range of the second rib 12 and can be abutted,
Even when the lid 2 is displaced in the left-right direction shown by arrows FG in FIG. 5, the shaft 4 is guided by the inclined surface of the second rib 12 by pushing down the lid 2 and the shaft of the bearing portion 5 is bent while being bent. The hole 5a can be guided and fitted.

According to the present embodiment, when the CD cover 2 is mounted on the shaft 4, the shaft 4 is guided by the first rib 11 and the second rib 12 and guided to the shaft hole 5 a of the bearing 5. Therefore, it is not necessary to work while visually checking the shaft 4 and the shaft hole 5a, so that the technology required for mounting can be reduced, and the mounting time can be shortened. When the CD cover 2 is removed, the arm 15 must be bent using a flathead screwdriver or the like to remove the shaft 4 from the shaft hole 5a, as in the conventional case.
Has a lower rigidity than the conventional bearing portion 5 and can be flexed with a small force.

In the above embodiment, the case where the cover 2 of the CD apparatus is attached to the shaft 4 of the apparatus main body 1 has been described.
The present invention can be applied to a mounting structure of a component that performs another rotating operation, for example, mounting of a cassette lid of a cassette tape. As shown in FIG. 6, when the bearing portion 22 of the switch lever 21 is attached to the shaft 23, the ribs 11, 1 described above are used.
The same effect can be obtained by providing the first rib 24 and the second rib 25 having the same structure as the second rib.

Although the second ribs 12 and 25 shown in each of the above embodiments are divided into three, the number of divisions is not limited to three. It may be one piece, but it is desirable to divide it into a plurality of pieces from the viewpoint of workability at the time of molding the bearing portion.

[0018]

As described above, according to the shaft mounting structure for the bearing of the present invention, since the bearing is provided with the guide member for guiding the shaft into the shaft hole of the bearing, the shaft and the bearing are connected. It is not necessary to perform the mounting operation while visually checking, and the mounting can be easily performed in a short time.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a main part showing a configuration of an embodiment of a shaft attachment to a bearing according to the present invention.

FIG. 2 is an exploded view of the shaft part and the bearing part of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is an explanatory diagram showing the operation of FIG. 2;

FIG. 5 is an explanatory diagram showing the operation of FIG. 3;

FIG. 6 is a perspective view showing a configuration of another embodiment of the present invention.

FIG. 7 is an external perspective view showing an example of the configuration of a CD device.

FIG. 8 is a perspective view showing a configuration of an example of a conventional shaft mounting structure for a bearing.

[Explanation of symbols]

4 shaft, 4a inclined surface, 5 bearing portion, 5a shaft hole, 11 first rib (guide member), 12 second rib (guide member), 13 shaft portion, 22 bearing portion,
23 shaft, 24 first rib (guide member), 25
Second rib (guide member)

Claims (3)

[Claims] Claims: 1. Each has a shaft arranged coaxially,
A shaft mounting structure for a bearing comprising a pair of left and right shaft portions integrally connected, and a shaft hole into which the shafts are rotatably fitted, and a pair of left and right bearing portions integrally connected. A shaft mounting structure for a bearing, wherein the shaft portion is formed of a flexible member capable of being displaced in an axial direction, and a guide member for guiding the shaft to the shaft hole is provided in the bearing portion. 2. A pair of left and right first ribs, one end of which is disposed near the outer periphery of the shaft hole and the other end of which is inclined outward, between the first ribs. 2. The bearing according to claim 1, further comprising: a second rib disposed at one end, the second rib having one end connected to the end surface of the shaft hole, and the other end having an inclined surface inclined inward with respect to the end surface. Shaft mounting structure. 3. The shaft mounting structure for a bearing according to claim 1, wherein an inclined surface that is inclined with respect to an axial direction is formed in a part of an outer periphery of a tip of the shaft.